English (GB)
26
S1, continuous operation:
In this operating mode, the pump can operate
continuously without being stopped for cooling. See
fig. 13. Being completely submerged, the pump is
sufficiently cooled by the surrounding liquid. See fig.
2.
Fig. 13 S1, continuous operation
Fig. 14 Start and stop levels
Make sure that the effective volume of the tank does
not become so low that the number of starts per hour
exceeds the maximum permissible number.
9.3 Direction of rotation
Check the direction of rotation before starting up the
pump.
An arrow on the motor housing indicates the correct
direction of rotation. Correct direction of rotation is
clockwise when viewed from above.
Checking the direction of rotation
The direction of rotation must be checked in the
following way every time the pump is connected to a
new installation.
Procedure
1. Let the pump hang from a lifting device, for
example the hoist used for lowering the pump
into the tank.
2. Start and stop the pump while observing the
movement (jerk) of the pump. If connected
correctly, the impeller will rotate clockwise, that is
the pump will jerk counterclockwise. See fig. 15.
3. If the direction of rotation is wrong, interchange
any two of the phases in the power supply cable.
See fig. 6 or
8to 9.
Fig. 15 Jerk direction
TM04 4528 1509TM04 2654 2808
Start
Stop S1
operation
Alarm
Min. 10 cm
Stop S3
operation
The pump may be started for a very short
period without being submerged to check
the direction of rotation.
TM04 2657 2808
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